Move c_src dirs back to toplevel

[bcachefs-tools-debian] / c_src / raid / gf.h

diff --git a/c_src/raid/gf.h b/c_src/raid/gf.h
deleted file mode 100644 (file)
index 1702c28..0000000
--- a/c_src/raid/gf.h
+++ /dev/null
@@ -1,137 +0,0 @@
-/*
- * Copyright (C) 2013 Andrea Mazzoleni
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#ifndef __RAID_GF_H
-#define __RAID_GF_H
-
-/*
- * Galois field operations.
- *
- * Basic range checks are implemented using BUG_ON().
- */
-
-/*
- * GF a*b.
- */
-static __always_inline uint8_t mul(uint8_t a, uint8_t b)
-{
-       return gfmul[a][b];
-}
-
-/*
- * GF 1/a.
- * Not defined for a == 0.
- */
-static __always_inline uint8_t inv(uint8_t v)
-{
-       BUG_ON(v == 0); /* division by zero */
-
-       return gfinv[v];
-}
-
-/*
- * GF 2^a.
- */
-static __always_inline uint8_t pow2(int v)
-{
-       BUG_ON(v < 0 || v > 254); /* invalid exponent */
-
-       return gfexp[v];
-}
-
-/*
- * Gets the multiplication table for a specified value.
- */
-static __always_inline const uint8_t *table(uint8_t v)
-{
-       return gfmul[v];
-}
-
-/*
- * Gets the generator matrix coefficient for parity 'p' and disk 'd'.
- */
-static __always_inline uint8_t A(int p, int d)
-{
-       return gfgen[p][d];
-}
-
-/*
- * Dereference as uint8_t
- */
-#define v_8(p) (*(uint8_t *)&(p))
-
-/*
- * Dereference as uint32_t
- */
-#define v_32(p) (*(uint32_t *)&(p))
-
-/*
- * Dereference as uint64_t
- */
-#define v_64(p) (*(uint64_t *)&(p))
-
-/*
- * Multiply each byte of a uint32 by 2 in the GF(2^8).
- */
-static __always_inline uint32_t x2_32(uint32_t v)
-{
-       uint32_t mask = v & 0x80808080U;
-
-       mask = (mask << 1) - (mask >> 7);
-       v = (v << 1) & 0xfefefefeU;
-       v ^= mask & 0x1d1d1d1dU;
-       return v;
-}
-
-/*
- * Multiply each byte of a uint64 by 2 in the GF(2^8).
- */
-static __always_inline uint64_t x2_64(uint64_t v)
-{
-       uint64_t mask = v & 0x8080808080808080ULL;
-
-       mask = (mask << 1) - (mask >> 7);
-       v = (v << 1) & 0xfefefefefefefefeULL;
-       v ^= mask & 0x1d1d1d1d1d1d1d1dULL;
-       return v;
-}
-
-/*
- * Divide each byte of a uint32 by 2 in the GF(2^8).
- */
-static __always_inline uint32_t d2_32(uint32_t v)
-{
-       uint32_t mask = v & 0x01010101U;
-
-       mask = (mask << 8) - mask;
-       v = (v >> 1) & 0x7f7f7f7fU;
-       v ^= mask & 0x8e8e8e8eU;
-       return v;
-}
-
-/*
- * Divide each byte of a uint64 by 2 in the GF(2^8).
- */
-static __always_inline uint64_t d2_64(uint64_t v)
-{
-       uint64_t mask = v & 0x0101010101010101ULL;
-
-       mask = (mask << 8) - mask;
-       v = (v >> 1) & 0x7f7f7f7f7f7f7f7fULL;
-       v ^= mask & 0x8e8e8e8e8e8e8e8eULL;
-       return v;
-}
-
-#endif
-